Electrochemical Cells

Metal A is more reactive than metal B. Which statement is correct?

• Electrons flow in the external circuit from A to B

• Positive ions flow through salt bridge from A to B

• Positive ions flow in external circuit from B to A.

• Electrons flow through salt bridge from B to A

Tags

NGSS.HS-PS1-2

• a

• b

• c

• d

Tags

NGSS.HS-PS1-7

The energy change in voltaic cell is ______________.

• kinetic energy --> electrical energy

• electrical energy --> chemical energy

• chemical energy --> electrical energy

• electrical energy --> kinetic energy

Tags

NGSS.HS-PS3-2

The anode is where oxidation occurs in...

• A Galvanic Cell

• A Electrolytic Cell

• Both Galvanic and Electrolytic cells

In an electrolytic cell, the positive electrode is the

• anode, where oxidation occurs

• anode where reduction occurs

• cathode where oxidation occurs

• cathode where reduction occurs

What is an electrolytic cell? 

• a cell that converts chemical energy into electrical energy 

• a cell that converts electrical energy into electrical energy 

• a cell that converts electrical energy into chemical energy 

• A cell that converts kinetic energy into potential energy. 

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

NGSS.HS-PS3-2

What occurs during electrolysis of a molten salt?

• Electricity is produced by a spontaneous redox reaction

• Electricity cause a non-spontaneous redox reaction to occur

• Electrons flow through the molten salt

• Electrons are removed from both ions of the molten salt

Tags

NGSS.HS-PS2-5

A student decided to silver-plate a locker key using the apparatus shown. In this cell, the key is the

• anode and is connected to the positive terminal of the power supply

• anode and is connected to the negative terminal of the power supply

• cathode and is connected to the positive terminal of the power supply

• cathode and is connected to the negative terminal of the power supply

Tags

NGSS.HS-PS2-5

How do you complete the circuit when using 2 half-cells?

• acid bridge

• base bridge

• salt bridge

What type of energy is stored in batteries or food?

• Potential energy

• Thermal energy

• Chemical energy

• Mechanical energy

Tags

NGSS.HS-PS1-4